Shenzhen Sanpin Medical Precision Injection Molding Co Ltd
Blood Separator
Blood Separation Components

Blood Separator

Molded blood separator bodies, discs and internals, carried over from the original product catalogue.

Product Overview

What This Component Is

Molded blood separator bodies, discs and internals, carried over from the original product catalogue. This is a multi part assembly of thin clear sections, which is the hardest combination in medical molding: everything that warps also has to seal and stay optically clear.

Key Benefits

  • Whole assembly tooled in one plant so the fit is owned in one place
  • 3D mold design reviewed against the assembly before steel is cut
  • Complex and high precision tooling including two shot and coated molds
Blood Separator produced by Sanpin Medical
Molded on tooling we cut ourselves in Shenzhen. Certification covers the site doing the work: ISO 9001:2015 and ISO 13485:2016.

Who It Is For

  • Blood collection device brands
  • Sample preparation kit makers
  • Medical device OEMs with a separator program

Problems It Solves

  • Thin separator geometry that warps as it cools and stops sealing
  • Assemblies split across molders where nobody owns the fit
  • Clarity lost in the sections that matter most for inspection

Application Scenarios

  • Blood sample separation
  • Plasma and serum preparation
  • Collection device sub assemblies
Technical Features

How It Is Engineered

  • Cooling layout designed around the thin sections rather than the block
  • Assembly tolerance stack reviewed at mold design stage
  • Mold up to 5 tonnes and 1000 x 800 x 700 mm available in house

Materials

  • Medical grade resin selected against your specification rather than substituted by us
  • Customer nominated grades accepted where a device master record already fixes the material
  • Colourants and additives confirmed in writing before the first sampling run
Specifications

Documented Figures

Listed On Original CatalogueYes, carried over from the previous site
Max Mold Size1000 x 800 x 700 mm
Max Mold Weight5 tonnes
ProcessInjection molding on in house built tooling
Mold Machining Accuracy0.002-0.005 mm on ground surfaces
Molding EnvironmentISO 8 clean room or conventional workshop
Quality SystemISO 9001:2015 and ISO 13485:2016
Country Of ManufactureShenzhen, China

Figures above are plant and tooling capabilities recorded on our own site. Part level tolerances are confirmed against your drawing at mold flow review rather than quoted as a blanket number.

Manufacturing Process

  1. Mold design review
  2. Steel machining and EDM
  3. Mold trial and cavity sampling
  4. Clean room or conventional molding
  5. In process dimensional check
  6. Clean room packing

Quality Control

  • Cavity by cavity dimensional sampling before a tool is released
  • In process checks during the molding run rather than only at the end
  • ERP system records the lot, tool and machine behind every shipment

Customization Options

  • Cavitation sized to your annual forecast instead of a fixed standard tool
  • Colour and resin grade to your specification
  • Clean room packing format and labelling agreed before the first shipment
Comparison

Compared With Other Routes

Splitting the separator across suppliersA separator lives or dies on the fit between parts. Splitting it guarantees the fit is nobody's responsibility.
Machined prototype separatorsMachined parts do not behave like molded ones on thin walls. Tooling early gives you the warp behaviour you will actually ship with.
Use Guide

How To Handle It

  • Qualify with molded parts, not machined prototypes, before design freeze
  • Test separation performance across cavities rather than on one good part
  • Store assemblies flat and bagged to avoid stress on thin sections
Questions Buyers Ask

Questions About Blood Separator

Can you build the full separator tool set?

Yes. Our precision mold department builds complex, high precision, two shot and coating molds up to 5 tonnes and 1000 x 800 x 700 mm.

How do you control warp on thin clear parts?

Through cooling layout and gate position decided at design stage, then verified on sampled parts. It is a tooling decision, not a molding parameter you can dial in later.

Do you provide 3D mold design?

Mold design happens in house from your 3D part data, and we return the layout for your approval before cutting steel.

Internal Links

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Related Reading

Cases And Guides For This Component

Tooling A Multi Part Blood Separator
Case Study

Tooling A Multi Part Blood Separator

Thin clear sections warp as they cool, and a separator has to stay both dimensionally stable and optically clear across every cavity of every part in the assembly.

Read The Case →

Quote This Component

Send the drawing, the annual volume and the resin your device file specifies. You will get a feasibility review rather than a price with conditions buried in it.